Unfortunately, when using "old" in a given context - for example, I wouldn't date that guy, he's super old! - sometimes people forget that. Before I realized this, I'd tell coworkers what I said above [in italics], they'd ask how old said person was, and then get offended because they were not as old as the person. Well, I'm not trying to date you, coworker. You're a perfectly decent age to be my coworker. You are not a perfectly decent age to be smashing your genitalia against mine. I've also noticed that if you tell people you are bad at guessing ages and over-guess (mistake a 30 year old for 45) they still get offended - but if you tell people you are bad at guessing ages and underguess, they are flattered. Age is a funny thing. I guess ego is too. It allows one to completely dismiss a very important caveat, in other words, OK I'll guess your age, but I have no idea what the fuck I'm doing.Old is decidedly relative.